Paradox 3.5

Paradox for DOS was a relational database management system originally released by Ansa-Software. In September 1987, Borland purchased Ansa-Software, including their Paradox/DOS 2.0 software. Notable classic versions were 3.5 and 4.5. Versions up to 3.5 were evolutions from 1.0. Version 4.0 and 4.5 were retooled in the Borland C++ windowing toolkit and used a different extended memory access scheme.